| Patents for H01T 21 - Apparatus or processes specially adapted for the manufacture or maintenance of spark gaps or sparking plugs (1,750) |
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| 05/28/2014 | CN103828152A 火花塞用主体件的制造方法以及火花塞的制造方法 The method of manufacturing a spark plug and a method of manufacturing a body member of the spark plug |
| 05/28/2014 | CN103828151A 具有侧面安装的火花塞搭铁电极的火花塞 Ground spark plug with a spark plug electrode side-mounted |
| 05/27/2014 | US8736154 Spark plug |
| 05/22/2014 | US20140141679 Method of manufacturing spark plug |
| 05/22/2014 | DE102004036738B4 Zündkerze mit laserverschweißtem Edelmetallplättchen und Herstellungsverfahren dafür Spark plug with laser welded noble metal chip and manufacturing method thereof |
| 05/21/2014 | EP2733800A2 Method of manufacturing spark plug |
| 05/21/2014 | EP2733799A2 Method for inspecting spark plug and method for manufacturing spark plug |
| 05/15/2014 | WO2014073918A1 Surge absorber and method for manufacturing same |
| 05/15/2014 | US20140134912 Spark plug |
| 05/15/2014 | US20140131927 Anti-fouling spark plug and method of making |
| 05/15/2014 | DE102012218695A1 Zündkerze mit verbessertem Abbrandwiderstand Spark plug with improved erosion resistor |
| 05/15/2014 | DE102012110750A1 Ignition electrode used in spark plug of internal combustion engine, has spark surface made of single crystal, while the electrode main portion is made of a single crystal of noble metal or noble metal-based alloy or nickel-based alloy |
| 05/15/2014 | DE102012021842A1 Pre-chamber spark plug for internal combustion engine, has ignition assembly whose geometrical configuration is designed such that ignitable mixture is present in spark gap in compression stroke of cylinder of internal combustion engine |
| 05/14/2014 | CN103797669A Esd保护器件及其制造方法 Esd protection device and manufacturing method thereof |
| 05/13/2014 | US8723405 Spark plug and method for producing spark plug |
| 05/07/2014 | CN203589449U Esd保护器件 Esd Protection Devices |
| 05/07/2014 | CN102792536B 火花塞、火花塞用的主体配件及火花塞的制造方法 The method of manufacturing a spark plug, the spark plug using the metallic shell of the spark plug and |
| 05/06/2014 | US8715025 Laser welded spark plug electrode and method of forming the same |
| 04/30/2014 | CN203574223U Rapid cleaning device for spark plug carbon deposit |
| 04/30/2014 | CN103026562B Method of manufacturing electrode complex for forming electrode of spark-plug, and method of manufacturing spark plug |
| 04/30/2014 | CN102379072B Method of manufacturing sparkplugs |
| 04/24/2014 | WO2014060162A1 Spark plug with improved burn-off resistor |
| 04/23/2014 | CN102610344B Resistor body and preparation method thereof, and spark plug and preparation method thereof |
| 04/23/2014 | CN102177630B 火花塞及其制造方法 And a method of manufacturing the spark plug |
| 04/17/2014 | DE102012222659A1 Method for adjusting distance between electrodes of electrode assembly that is utilized for treatment of food products, involves measuring current flowing during ignition, and adjusting distance between electrodes to optimum value |
| 04/16/2014 | EP2719037A1 Electrode for an ignition plug and method for the production thereof |
| 04/16/2014 | CN203553615U Direct lightning strike protection device capable of discharging in advance and limiting lightning currents |
| 04/09/2014 | CN203536734U Spark plug cleaning device |
| 04/09/2014 | CN103715609A Assembling device and machining method of protective element for protecting spark plug from voltage breakdown |
| 04/03/2014 | DE10229338B4 Zündkerze und Zündkerzenisolator Spark plug and spark plug insulator |
| 04/03/2014 | DE10205078B4 Zündkerze Spark plug |
| 04/03/2014 | DE102012018625A1 Spark plug for use as prechamber spark plug, has electrode arrangement which has central middle electrode and measuring electrode, where measuring electrode is arranged in distance to middle electrode |
| 03/27/2014 | US20140083982 Welding system for attaching firing tips to spark plug electrodes |
| 03/26/2014 | CN102856792B Composite alumina insulator spark plug and manufacturing method thereof |
| 03/25/2014 | US8680758 Spark plug having a plastic upper insulator and method of construction |
| 03/20/2014 | US20140077683 Spark plug with ceramic electrode tip |
| 03/18/2014 | US8672722 Spark plug manufacturing method |
| 03/18/2014 | US8672721 High power discharge fuel ignitor |
| 03/12/2014 | CN102576981B ESD protection device and manufacturing method thereof |
| 03/06/2014 | US20140065915 Method for manufacturing spark plug |
| 03/05/2014 | EP2704271A2 Spark plug |
| 03/05/2014 | EP2704270A1 Spark plug and production method therefor |
| 02/20/2014 | DE112012002243T5 Zündkerze mit Verrußungsschutz und Verfahren zu deren Herstellung Spark plug with Verrußungsschutz and processes for their preparation |
| 02/19/2014 | EP2698886A1 Method for manufacturing spark plug |
| 02/12/2014 | CN103582985A Electrode for an ignition plug and method for the production thereof |
| 02/12/2014 | CN103579910A Self-triggering voltage setting method of spark gap of 500kV series compensation system |
| 02/05/2014 | CN103560399A Direct lightning protective device with early discharging function and lightning current limiting function |
| 02/04/2014 | US8641468 Manufacturing method for spark plug |
| 02/04/2014 | US8640354 Method for measuring deviation of joint position of member and method for producing spark plug |
| 01/28/2014 | US8636555 Manufacturing apparatus and manufacturing method for spark plugs |
| 01/16/2014 | US20140015398 Spark plug and production method therefor |
| 01/15/2014 | CN102790359B Powder adding device for spark plug |
| 01/15/2014 | CN101950927B Assembling device of screw stems |
| 01/14/2014 | US8628367 Method for measuring deviation of joint position of member and method for producing spark plug |
| 01/09/2014 | US20140011417 Method for manufacturing spark plug |
| 01/08/2014 | EP2683041A1 Spark plug manufacturing method |
| 01/08/2014 | CN203387050U Side-electrode ignition end of spark plug |
| 01/02/2014 | DE102013106564A1 Manufacture of electrode material for spark plugs, involves arranging interlayer of refractory metal and nickel-based alloy cladding on ruthenium core, hot-forming obtained layered structure, and removing interlayer and cladding |
| 01/02/2014 | DE102005010048B4 Zündkerze und Verfahren zur Herstellung derselben Spark plug and method for manufacturing the same |
| 01/01/2014 | CN103493317A Spark plug and production method therefor |
| 12/26/2013 | US20130344765 Method of manufacturing a spark plug electrode material into a desired form |
| 12/25/2013 | EP2133968B1 Spark plug manufacturing method |
| 12/25/2013 | EP2096726B1 Insulator for spark plug, and method for manufacturing spark plug |
| 12/25/2013 | CN103476706A Ozone generating device |
| 12/19/2013 | WO2013187939A1 Spark plug electrode with with nanocarbon enhanced copper core |
| 12/19/2013 | US20130337718 Encapsulated metal microtip microplasma device and array fabrication methods |
| 12/19/2013 | US20130337717 Spark plug manufacturing method |
| 12/18/2013 | EP2103402B1 Method for manufacturing an insulator for spark plug |
| 12/18/2013 | CN103457162A Large-headed nail type side electrode igniting needle and manufacturing method thereof |
| 12/18/2013 | CN103457161A Flat side electrode of sparking plug and manufacturing method thereof |
| 12/18/2013 | CN103457160A Side electrode ignition end of sparking plug and manufacturing method thereof |
| 12/18/2013 | CN102859815B Spark plug for internal combustion engine and method of manufacturing spark plug |
| 12/11/2013 | CN103444025A Method for manufacturing spark plug |
| 12/11/2013 | CN103444024A Corona igniter having controlled location of corona formation |
| 12/05/2013 | WO2013179640A1 Gasket and production method for same, and spark plug and production method for same |
| 12/05/2013 | DE102013210436A1 Method for manufacturing spark plug, involves sealing gap between tubular metallic cup and circumferential surface of metallic core along entire periphery in direction of shaft |
| 12/04/2013 | CN203326360U Esd保护结构 Esd Protective Structure |
| 11/28/2013 | WO2013177031A1 Method of making ruthenium-based material for spark plug electrode |
| 11/28/2013 | US20130313961 Method of making ruthenium-based material for spark plug electrode |
| 11/27/2013 | EP2667465A1 Manufacturing method for spark plug |
| 11/27/2013 | CN203312623U Spark plug composite alumina insulator |
| 11/26/2013 | US8591276 Method of manufacturing center electrode and spark plug |
| 11/20/2013 | EP2664039A1 Corona igniter having controlled location of corona formation |
| 11/20/2013 | EP2664038A1 Spark plug having improved ground electrode orientation and method of forming |
| 11/20/2013 | EP2131462B1 Spark plug for internal combustion engine and method of manufacturing the same |
| 11/14/2013 | WO2013169365A1 Shrink-fit ceramic center electrode |
| 11/07/2013 | DE102012207319A1 Zündkerze und Verfahren zum Herstellen einer Zündkerze Spark plug and method for manufacturing a spark plug |
| 11/06/2013 | EP2659557A1 Corona igniter having improved gap control |
| 10/31/2013 | DE102013207714A1 Zündkerze sowie Verfahren zum Herstellen von Zündkerze A spark plug as well as methods for the manufacture of the spark plug |
| 10/29/2013 | US8569940 Spark plug having ground electrode tip attached to free end surface of ground electrode |
| 10/29/2013 | US8568181 Spark plug with undercut insulator |
| 10/24/2013 | US20130280980 Manufacturing method for spark plug |
| 10/23/2013 | EP2652847A1 Corona igniter with improved corona control |
| 10/23/2013 | EP2652846A2 Corona igniter including ignition coil with improved isolation |
| 10/23/2013 | EP2652311A2 Corona ignition device having asymmetric firing tip |
| 10/22/2013 | US8564184 Spark plug and process for producing spark plug |
| 10/17/2013 | US20130271892 Collapsible High-voltage Electrical Discharge Generator |
| 10/16/2013 | EP2650987A1 Method for manufacturing spark plug |
| 10/15/2013 | US8558440 Method for applying a pin on an electrode base body |
| 10/09/2013 | CN103348546A Spark plug manufacturing method |